On this day in 1994 - January 25th - Clementine was launched.
Over a period of nearly four months the US spacecraft Clementine made scientific observations of the Moon. In addition, Clementine was used as a test of the effects on sensors and components of extended exposure to space.
On this day in 1829 - January 27th - pioneering astrophotographer Isaac Roberts was born.
Roberts was a Welsh amateur astronomer, and a fellow of the Royal Geological Society. He developed a photographic technique which made it possible to capture faint objects. Roberts's photograph of the Andromeda Nebula showed the spiral structure of M31, which was surprising at the time.
On this day in 1941 - January 27th - New Zealand astrophysicist Beatrice Hill Tinsley was born.
Beatrice Tinsley began her career late and died in 1981, but in the intervening years she revolutionized our view of galactic evolution. Her pioneering work continues to be regularly cited by researchers.
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